Means for cleaning sieves or bolting-cloths



(No Model.)

0. s. WENGER. MEANS FOR CLEANING SIEVES 0R BOLTING GLOTHS. No. 303,407.Patented Aug. 12, 1884.

N PEYERS. Phmn-Lflhuguphun Washinglun. nv c.

Units CLAYTON S. WENGER, OF WEST EARL, PENN SYLVANIA] MEANS FOR CLEANINGSIEVES OR BOLTlNG-CLOTHS.

SPECIFICATION forming part of Letters Patent No. 303,407, dated August12, 1884.

Application filed November 30 1883. (No model.)

My invention relates to improvements in the means for cleaning sieves orboltingclothssuch as are used in flour-bolting machines,middlings-purifiers, and the like-in which light chains attached to amovable bar act in connection with the sieve; and the object of myinvention is to thoroughly clean the sieve without jarring it orpounding against it. This object I accomplish in a very simple manner bythe mechanism illustrated in the accompanying drawings, in which- Figurel is a top view of a sieve with my device attached, the mechanismactuating the same being removed above the line y g of Fig. 2. Fig. 2 isa section through the sieve on the line 00 x, and shows a front view ofthe manner in which power is applied to the reciprocating rod; and Fig.3 is a longitudinal vertical section through c o of Fig. 1.

Similar letters refer to similar parts th roughout the several views.

The sieve-frame A is provided with longitudinal and transverse braces a,which serve to keep it in shape and the cloth D'tightly stretched. Inthe frame I have been using these braces are set in the upper part ofthe frame, and the transverse braces are raised above the sieve; but mydevice will apply equally well to a frame in which the braces are placedbeneath the sieve.

At the head of the sieve I have placed a horizontal rod, 13, to whichare attached followingchains 0, somewhat larger than a large-linkedwatch-chain, which lie loosely upon the cloth, the only place at whichthey are fastened being to the rod B, as mentioned. The rod B movesslowly'back and forth a sufficient distance each way to carry everychain from side to side of its compartment. This movement of the rod isso slow that each -movement of its head.

reciprocating it in the usual manner.

chain, by reason of its own weight, follows the WVhen the rod reachesthe limit of its movement in either direction, it remains stationary fora short time before reversing its motion, allowing time for the chainsto straighten themselves before beginning to return.

As I have said, my device can be used with a sieve in which the bracesare put below the cloth by usingthe device arranged as herein described,or by lengthening the movement of the rod and employing only one chain.Instead of a ehain,'a long spiral spring may be used, or, in fact,anything else which will be sufficiently pliable to rest its wholelength upon the cloth.

In order to give the required movement to the rod 13, I employ thefollowing-described mechanism: A driving-shaft, S, is actuated by meansof a band-wheel, E. This drivingshaft has attached to it a worm, w,which gives motion to the cog-wheel w. The cogwheel, by means of acrank-pin, 19, operates the crank F, which againactuates the lever L,connected with the horizontal rod B. The opening m, through which thecrank is connected with the pin, is a horizontal slot, which preventsthe pin from moving the crank back or forth for a few moments as itpasses the center on either side of the axle of the cog-wheel. The leverL passes through a slot, 9, in the rod B sufficiently long to allow ofthe oscillating of the lever. The ends of the rod rest in and movethrough openings in the sides of the box N inclosing the sieve.

' The sieve has the inclination from the head to the foot, and-suitablemeans for shaking or The upper end of the following-chainslbeingattached to the horizontal rod B, the lower ends, by means of the motionof the sieveand their own gravity, follow the movement of the upper endsattached to the rod, but follow somewhat behind the heads, so that whenthe to this manner of moving the rod 13, as there are other Well-knownmeans by which it can can be done; but

What I do claim as new, and desire to secure 5 by Letters Patent, is-

1. lhe combination, with a shaking sieve, of a reciprocating rod, andthe followingchains attached thereto, substantially as herein specified.

2. The combination, with a shaking sieve, 10 of a reciprocating rodhaving an intermission between the movements back and forth, and thefollowing-chains attached thereto, as herein specified.

CLAYTON S. WVENGER. Witnesses:

H. CARPENTER, WVM. R. GERHART.

